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23 April 2017 All-fiber hydrogen sensor based on stimulated Raman gain spectroscopy with a 1550-nm hollow-core fiber
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103233C (2017) https://doi.org/10.1117/12.2264988
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
We report a highly sensitive all-fiber hydrogen sensor based on continuous-wave stimulated Raman gain spectroscopy with a hollow-core photonic crystal fiber operating around 1550 nm. A pump-probe configuration is used, in which the frequency difference between the pump and the probe lasers is tuned to the S0(0) transition of para-hydrogen with a Raman shift of 354 cm-1. Preliminary experiments demonstrate a detection limit down to 17 ppm with a 250 s averaging time, and further improvement is possible. The all-fiber configuration operating in the telecommunication wavelength band would enable cost-effective and compact sensors for high sensitivity and high-resolution trace analysis.
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Fan Yang and Wei Jin "All-fiber hydrogen sensor based on stimulated Raman gain spectroscopy with a 1550-nm hollow-core fiber", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233C (23 April 2017); https://doi.org/10.1117/12.2264988
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